	<!DOCTYPE html>	
<html>

	<head>	
	<meta charset="UTF-8">	
	<title>Document</title>	
 </head>
  <body>
	<script>	
function countDown(time) {

	var nowTime = new Date();	
	var overTime = new Date(time);	    
    var times = (overTime - nowTime) / 1000;
    var d = parseInt(times / 60 / 60 / 24);
    d =d<10 ? '0'+d:d; 
    var h = parseInt(times / 60 / 60 % 24);
	h=h<10 ?'0'+h:h;	
	var m = parseInt(times / 60 %60);		
   m =m < 10 ?'0'+m:m;
   var s = parseInt(times %60);
	s =s< 10 ?'0'+s: s;	
	return d +'天' + h+'时'+m+'分' + s+'秒';	
}
	console.log(countDown('2025-1-1 00:00:00'));	
 </script>
  </body>
  </html>